Studies included in the categorical subscale analyses for impulsivity

Non (or Lack of) Planning	Task/Measure
Anokhin et al 2010	Delay Discounting
Buss & Plomin, 1975	EASI (Buss & Plomin, 1975)
Carey & Rice 1983	DPQ (Tellegen, 1979)
DiLalla et al 1994	Inhibitory control (lab)
Dougherty et al 2003	BIS (Patton et al., 1995)
Gagne et al 2010	Inhibitory control (lab)
Groot et al 2004	Go/NoGo
Heiser et al 2006	CPT
Johnson et al 2004	PRF (Jackson, 1999)
Loehlin et al 1986	TTS (Thurstone, 1950)
Matheny et al 1989	Behavioral inhibition
McGue et al 1993	MPQ (Control; Tellegen, 1982)
Neale et al 1989	EASI (Buss & Plomin, 1975)
Owen et al 1970	Inhibition (lab)
Pedersen et al 1988	KSP (Karolinska Scales of Personality)
Plomin et al 1991	EASI (Buss & Plomin, 1975)
Plomin et al 1975	MFFT (Kagan et al. 1963)
Robinson et al 1992	Inhibition (lab)
Saudino et al 1999	KSP (Karolinska Scales of Personality)
Schachar et al 2011	Stop-Signal
Serocynzski et al 1999	BIS (Patton et al., 1995)
Stevenson et al 1985	EASI (Buss & Plomin, 1975)
Takahashi et al 2007	BIS (Behavioral Inhibition System; Carver & White, 1994)
Sensation Seeking
Ando et al 2004	TCI (novelty seeking) (Cloninger et al., 1991)
Heath et al 1994	TPQ (Cloninger et al., 1991)
Heiman et al 2004	JTCI/TPQ (Cloninger et al., 1991)
Heiman et al 2003	TCI (Cloninger et al., 1991)
Hur et al 1997	SSS (Zuckerman)
Isen et al 2009	JTCI (Cloninger et al., 1991)
Koopmans et al 1995	SSS (Zuckerman, 1994)
Mustanski et al 2003	SSS (Zuckerman, 1994)
Stoel et al 2006	SSS (Zuckerman, 1994)
Vicken et al 2005	MMPI (Hathaway & McKinley, 1942)
Young et al 2009	TCI (Cloninger et al., 1991)
Lack of Perseverance
Blonigen et al 2003	PPI (Lilienfeld & Andrews, 1996)
Larsson et al 2006	YPI (Andershed et al., 2006)
Sherman et al 1997	DICA-R (Herjanic & Reich, 1982)
Thapar et al 2000	ADHD (impulsive items/behaviors)
Vierikko et al 2004	ADHD

Note: All Studies predominantly used community and population based samples including twin registries. ADHD=attention deficit hyperactivity disorder; SSS= sensation seeking scale; BIS= Barratt Impulsiveness Scale; BIS = Behavioral Inhibition System; EASI=extraversion, agreeableness, sociability, impulsivity; KSP= Karolinska Scales of Personality; YPI= Youth Psychopathy Inventory; TTS= Thurstone Temperament Schedule; MPQ=Multidimensional Personality Questionnaire; CPT= continuous performance test; MFFT= matching familiar figures test; CPI= California Psychological Inventory; DPQ= Differential Personality Questionnaire; PPI = Psychopathic Personality Inventory; PRF = Personality Research Form; MMPI = Minnesota Multiphasic Personality Inventory; (J)TCI = (Junior) Temperament and Character Inventory